Ordinary Day

Curse you! I've downloaded it to play at work (afternoon breaks), or at least I would if (1) I could see those tiny little sprites (tiles?) and (2) if I could figure out how to get outside the first two rooms! Argh! Two open doors, one led down a dead-end tunnel, the other says it's open but I can't get through it.

Any help sites you could recommend for newbies?